CVE Tools
Sign in

CVE-2024-3884

Undertow: outofmemory when parsing form data encoding with application/x-www-form-urlencoded

Published: Dec 3, 2025Updated: Mar 5, 2026 Sources: CVE List NVD GHSACWE-20
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.2%
Top 35.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

Red Hat JBoss Enterprise Application PlatformRed Hat
On-prem
Operating Systems / linux-distro
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Red Hat
On-prem
Operating Systems / linux-distro
Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Red Hat
On-prem
Operating Systems / linux-distro
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7Red Hat
On-prem
Operating Systems / linux-distro
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8Red Hat
On-prem
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
and 28 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:0383
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:0384
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:0386
access.redhat.com
and 26 more references View all →

Timeline

Published
Dec 3, 2025
Last Updated
Mar 5, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2024-3884 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows